Fuel cell system and control method thereof
    1.
    发明授权
    Fuel cell system and control method thereof 有权
    燃料电池系统及其控制方法

    公开(公告)号:US09531022B2

    公开(公告)日:2016-12-27

    申请号:US14890444

    申请日:2014-04-23

    Abstract: A fuel cell system comprises a fuel cell stack, a circulation flow path of a cooling medium, a pump provided in the circulation flow path, a supply-side temperature sensor provided to detect a supplied cooling medium temperature, a discharge-side temperature sensor provided to detect a discharged cooling medium temperature, and a cold-start controller configured to control a circulation volume of the cooling medium by the pump at a cold start of the fuel cell stack. The cold-start controller estimates a fuel cell internal temperature and selectively sets the circulation volume of the cooling medium between a reduced volume and a normal volume, based on a magnitude relationship between the internal temperature and the discharged cooling medium temperature. When the supplied cooling medium temperature becomes equal to the discharge cooling medium temperature after setting the circulation volume, the cold-start controller sets the circulation volume of the cooling medium to an increased volume (maximum circulation volume).

    Abstract translation: 一种燃料电池系统,包括燃料电池堆,冷却介质的循环流路,设置在循环流路中的泵,设置用于检测供给的冷却介质温度的供给侧温度传感器,设置有排出侧温度传感器 以检测排出的冷却介质温度;以及冷启动控制器,其构造成在所述燃料电池堆的冷启动时由所述泵控制所述冷却介质的循环体积。 冷启动控制器估计燃料电池内部温度,并且基于内部温度和排出的冷却介质温度之间的大小关系,选择性地将冷却介质的循环体积设定在减小的体积和正常体积之间。 冷却启动控制器将冷却介质的循环量设定为增加的体积(最大循环量)后,在供给的冷却介质的温度与排出冷却介质的温度相等后,

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